Pauli writes on Majorana's paper published in: Nuovo Cimento: 1932, with special reference to unitary representations of the Lorentz group. He adds some comments on his and Jauch's calculations concerning electron scattering experiments.

Pauli writes of Oppenheimer's ideas about the mathematical results of quantum-electrodynamics, and of Pauli's intention to calculate the higher approximation of the Compton-effect. He also comments on Fierz's paper about Newton. Pauli attached a copy of Oppenheimer's letter is attached.

Pauli's letter is on existensialism, on the process of cognition and the idea of God, on the concept of reality, and the reality of symbols, on the relation of physics and psychology and on Jung's reaction on Pauli's ideas.

Pauli writes about papers written by Schwinger on vacuum polarization and self-energy. He adds remarks words on Dyson and Feynman.

Pauli writes on the problem of relativistic invariant regularization and Stückelberg's view on it.

Pauli writes about Feynman's paper on the positron. He adds a suggestion of a procedure which disregards the particle and follows up the changes of charge in space and time.

In this letter, Pauli speculates about the connection between synchronicity and Leibniz's synchronized monads. He writes on the necessity for introducing into science a principle more general than causality and similar to that of the "correspondentia" of the Middle Ages which would give significance both to causality and synchronicity in a wider frame.

Pauli writes on the symbol of trinity.

Pauli adds some reference to Fierz's paper on magnetic poles in connection with group theoretical considerations, published in: Helvetica physica acta: 17, 1943.

Pauli gives some further remarks on the representation theory.